21308432

素因数分解:

$2^4\times {\mathrm{137}}^1\times {\mathrm{9721}}^1$

素因数の和:9866

約数の個数: 20

約数和(自身を含む): 41590716

約数和(自身を除く): 20282284

約数列:

[1, 2, 4, 8, 16, 137, 274, 548, 1096, 2192, 9721, 19442, 38884, 77768, 155536, 1331777, 2663554, 5327108, 10654216, 21308432]

約数ペア:

[(1, 21308432), (2, 10654216), (4, 5327108), (8, 2663554), (16, 1331777), (137, 155536), (274, 77768), (548, 38884), (1096, 19442), (2192, 9721)]